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Author Topic: Vanadium redox battery (VRB)  (Read 10431 times)

Offline froot

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  • Posts: 3
Vanadium redox battery (VRB)
« on: May 30, 2008, 11:23:27 AM »
Perhaps a bit bold of me starting a new topic with my first post but after searching I suprisingly cannot see this technology being discussed here, oh and excellent site, it's taking up way too much of my family and work time ;)

Just some links:

http://thefraserdomain.typepad.com/energy/2006/01/vandium_reflux_.html

http://en.wikipedia.org/wiki/Vanadium_redox_battery

Ther are plenty more sources on the web for this technology and I'm sure some of you have some good links for us. Some people may call it a type of fuel cell, the only missing common denominator with fuell cells is catalysis.
I find this type of battery system to be the best concept for battery type storage so far, in my opinion.
Why?

1. It has a 100% charge efficiency
2. It is fairly simple to upgrade the system to store as much energy as you need and much more -> near infinity.
3. No complicated and expensive catalysts required.
4. It's response to loading is excellent.
5. It can be used in many configurations, where one can tap power off selected cells while the system can be charged with remaining cells without effecting the equillibrium between the cells themselves. Using it as a DC-DC converter comes to mind.
6. The electrolytes on each side of the cell membrane are similar and it is not a problem if they contaminate each other, a simple recharge will fix that, as well as the electrolytes are not susceptable to poisoning from atmospheric gases.

The downside:
1. It is big and elaborate, but not excessively complicated.

Now the trick is to build one, I have a few ideas but I am a little stumped with regards to material specifications of electrodes and membranes, and electrolyte preparation. Does anybody have experience with a flow battery system like this?

Free Energy | searching for free energy and discussing free energy

Vanadium redox battery (VRB)
« on: May 30, 2008, 11:23:27 AM »

Offline resonanceman

  • Hero Member
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  • Posts: 1579
Re: Vanadium redox battery (VRB)
« Reply #1 on: May 31, 2008, 05:29:03 AM »
Perhaps a bit bold of me starting a new topic with my first post but after searching I suprisingly cannot see this technology being discussed here, oh and excellent site, it's taking up way too much of my family and work time ;)

Just some links:

http://thefraserdomain.typepad.com/energy/2006/01/vandium_reflux_.html

http://en.wikipedia.org/wiki/Vanadium_redox_battery

Ther are plenty more sources on the web for this technology and I'm sure some of you have some good links for us. Some people may call it a type of fuel cell, the only missing common denominator with fuell cells is catalysis.
I find this type of battery system to be the best concept for battery type storage so far, in my opinion.
Why?

1. It has a 100% charge efficiency
2. It is fairly simple to upgrade the system to store as much energy as you need and much more -> near infinity.
3. No complicated and expensive catalysts required.
4. It's response to loading is excellent.
5. It can be used in many configurations, where one can tap power off selected cells while the system can be charged with remaining cells without effecting the equillibrium between the cells themselves. Using it as a DC-DC converter comes to mind.
6. The electrolytes on each side of the cell membrane are similar and it is not a problem if they contaminate each other, a simple recharge will fix that, as well as the electrolytes are not susceptable to poisoning from atmospheric gases.

The downside:
1. It is big and elaborate, but not excessively complicated.

Now the trick is to build one, I have a few ideas but I am a little stumped with regards to material specifications of electrodes and membranes, and electrolyte preparation. Does anybody have experience with a flow battery system like this?



Froot   

Do you know  of any replication attempts  so far ?

gary

Offline Super God

  • Sr. Member
  • ****
  • Posts: 423
Re: Vanadium redox battery (VRB)
« Reply #2 on: May 31, 2008, 05:48:07 AM »
Man, if we could get a technology like this on a smaller scale it could revolutionize electric vehicles!  It could replace our fueling infrastructure completely.

Free Energy | searching for free energy and discussing free energy

Re: Vanadium redox battery (VRB)
« Reply #2 on: May 31, 2008, 05:48:07 AM »
Sponsored links:




Offline resonanceman

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  • Posts: 1579
Re: Vanadium redox battery (VRB)
« Reply #3 on: May 31, 2008, 07:05:31 AM »
Man, if we could get a technology like this on a smaller scale it could revolutionize electric vehicles!  It could replace our fueling infrastructure completely.

From what I have read  the energy density  is  way to low for a vehicle

I wonder what   new technologys  have been  tried 

colloidal  metals or  nano partical coating  could  be interesting


gary

Offline froot

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  • *
  • Posts: 3
Re: Vanadium redox battery (VRB)
« Reply #4 on: June 02, 2008, 11:46:06 AM »
Thanks for the replies.

Resonanceman I don't know of anybody who has worked with this type of system, unfortunately, and was hoping I'd find another enthusiast here. I think now the best would be for me to experiment with the concepts using bits and pieces around the house and see if I can achieve anything.

Free Energy | searching for free energy and discussing free energy

Re: Vanadium redox battery (VRB)
« Reply #4 on: June 02, 2008, 11:46:06 AM »
Sponsored links:




Offline resonanceman

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  • Posts: 1579
Re: Vanadium redox battery (VRB)
« Reply #5 on: June 02, 2008, 07:12:43 PM »
Thanks for the replies.

Resonanceman I don't know of anybody who has worked with this type of system, unfortunately, and was hoping I'd find another enthusiast here. I think now the best would be for me to experiment with the concepts using bits and pieces around the house and see if I can achieve anything.

Froot

I think it is an idea that is  worth exploring ....... I  just don't  have the knowledge of chemistry to  really  do much  with  it .

I would suggest   tinkering  with the idea the best  you can .....post  what ever   you come up with .
 
If   you keep  adding   to  what   you have here ...........evenutally someone  will come along and  realise that   you are  working on the ideal  project  the them.

gary


Offline nikinick

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  • *
  • Posts: 1
Re: Vanadium redox battery (VRB)
« Reply #6 on: June 03, 2008, 04:28:27 AM »
Here is a link with great explanation and working knowledge.


http://www.vrb.unsw.edu.au/

Free Energy | searching for free energy and discussing free energy

Re: Vanadium redox battery (VRB)
« Reply #6 on: June 03, 2008, 04:28:27 AM »
Sponsored links:




Offline resonanceman

  • Hero Member
  • *****
  • Posts: 1579
Re: Vanadium redox battery (VRB)
« Reply #7 on: June 03, 2008, 07:12:13 AM »
Here is a link with great explanation and working knowledge.


http://www.vrb.unsw.edu.au/


Thanks for the link  nikinick   


gary

Offline segfried

  • Newbie
  • *
  • Posts: 1
Re: Vanadium redox battery (VRB)
« Reply #8 on: January 08, 2009, 10:38:22 AM »
Oh
seems I missed the dicussion,
I found it practical for VRB used combining with  photovoltaic and wind power, but no small example available
So, froot , have you tried  VRB system?
maybe I can take part in......

Free Energy | searching for free energy and discussing free energy

Re: Vanadium redox battery (VRB)
« Reply #8 on: January 08, 2009, 10:38:22 AM »
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